LM4850 National Semiconductor, LM4850 Datasheet - Page 5

• Manufacturer Part Number: LM4850
• Description: Mono 1.5 W / Stereo 300 mW Power Amplifier
• Manufacturer: National Semiconductor

External Components Description
Typical Performance Characteristics
LD Specific Characteristics
Components
(Refer to Figure 1.)
2.
3.
4.
5.
6.
C
C
C
R
C
B
O
s
i
f
THD+N vs Output Power
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
highpass filter with R
for an explanation of how to determine the value of C
Feedback resistance which sets the closed-loop gain in conjunction with R
Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of
External Components, for information concerning proper placement and selection of C
Output coupling capacitor which blocks the DC voltage at the amplifier’s output. Forms a high pass filter
with the single-ended load R
THD+N vs Frequency
LM4850LD
LM4850LD
i
at f
c
20001077
= 1/(2πR
20001075
L
at f
O
= 1/(2π R
i
C
i
). Refer to the section, Proper Selection of External Components,
(Continued)
Functional Description
5
L
C
O
).
i
.
THD+N vs Output Power
THD+N vs Frequency
LM4850LD
LM4850LD
i
.
B
.
20001078
20001076
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